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AUSCERT External Security Bulletin Redistribution
USN-4903-1: curl vulnerability
8 April 2021
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2021-22876
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USN-4903-1: curl vulnerability
07 April 2021
curl could be made to expose sensitive information over the
o Ubuntu 14.04 ESM
o curl - HTTP, HTTPS, and FTP client and client libraries
Viktor Szakats discovered that curl did not strip off user credentials
from referrer header fields. A remote attacker could possibly use this
issue to obtain sensitive information.
The problem can be corrected by updating your system to the following package
o libcurl3-nss - 7.35.0-1ubuntu2.20+esm7
o curl - 7.35.0-1ubuntu2.20+esm7
o libcurl3-gnutls - 7.35.0-1ubuntu2.20+esm7
o libcurl3 - 7.35.0-1ubuntu2.20+esm7
In general, a standard system update will make all the necessary changes.
o USN-4898-1 : curl, libcurl3, libcurl3-nss, libcurl3-gnutls, libcurl4
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